Getting Started with Flask

1. Install flask in a virtual environment

pip install flask

2. Install Flask-RestFul

pip install flask-restful

3. Write the first program in Flask as

from flask import Flask

app = Flask(__name__)

if __name__ == '__main__':
    app.run(debug=True)

Now you can run your first applications in flask on localhost at port 5000 :

http://127.0.0.1:5000/ 

4. Wait you have a few more things to do: Import Api and Resources from flask_restful as:

from flask_restful import Api, Resource

5. Initialize the API with the application as:

api = Api(app, prefix='/v1')

6. Create the first resource class to create the first endpoint:

class HelloWorldResource(Resource):
    @classmethod
    def get(cls):
        return 'Congratulations you have successfully built the first API in the flask'

7. add resources on API as:

api.add_resource(HelloWorldResource, '')

Finally, Run the application you will get your API on the following URL:

http://127.0.0.1:5000/v1

---

Our final code will be:

from flask import Flask
from flask_restful import Api, Resource

app = Flask(__name__)
api = Api(app, prefix='/v1')


class HelloWorldResource(Resource):
    @classmethod
    def get(cls):
        return 'Congratulations you have successfully built first api in flask'


api.add_resource(HelloWorldResource, '')

if __name__ == '__main__':
    app.run(debug=True)

Github